I have found some research which suggests that Thomas Adair may have had a fourth son, Samuel Adair b. 1731 in Pennsylvania. This would, I believe, be the Samuel Adair that I descend from and would solve a lot of mysteries concerning family stories which go way back connecting us to Thomas. There seems to be no real proof but I am wondering if this is at all possible. The original research I started with stated that my line descended from Thomas Adair but the connection was not made clear. Early family letters and documents mention members of that line as cousins. I had connected us to William Adair of New Castle Delaware but that has proven a false lead. They do have a Samuel Adair born about the same time but he was very much alive after my Samuel died in 1773 in Cecil County Maryland. Would love to crack this family mystery no matter where it leads.